DRC-2018-001142 - 0901a068807ae91b

State of Utah
GARY R. HERBERT Governor SPENCER J. COX
Lieutenant Governor
Department of
Environmental Quality
Alan Matheson Executive Director DIVISION OF WASTE MANAGEMENT AND RADIATION CONTROL Scott T. Anderson Director

February 2, 2018

Kathy Weinel, Quality Assurance Manager
Energy Fuels Resources (USA) Inc.
225 Union Blvd., Suite 600
Lakewood, CO 80228
RE: Energy Fuels Resources, White Mesa Uranium Mill November 13, 2017 3rd Quarter 2017
Groundwater Monitoring Report, November 15, 2017 Notice Pursuant to Part I.G.1(a).
Utah Groundwater Discharge Permit No. UGW370004 and November 15, 2017 Request for
Removal of Certain Groundwater Monitoring Parameters from Accelerated Monitoring Status Groundwater Discharge Permit No. UGW370004
Dear Ms. Weinel:

The Division of Waste Management and Radiation Control has completed its review of the following Energy Fuels Resources (USA) Inc. (EFR) documents:
1. EFR, November 13, 2017, Transmittal of 3rd Quarter 2017 Groundwater Monitoring Report
Groundwater Quality Discharge Permit UGW370004 White Mesa Uranium Mill.
2. EFR, November 15, 2017, State of Utah Ground Water Discharge Permit No. UGW370004 White Mesa Uranium Mill – Notice Pursuant to Part I.G.1(a).
3. EFR, November 15, 2017, State of Utah Ground Water Discharge Permit No. UGW370004
White Mesa Uranium Mill – Removal of Certain Groundwater Monitoring Parameters from
Accelerated Monitoring Status
The review was conducted to ensure compliance with all applicable parts of Utah Groundwater
Discharge Permit No. UGW370004 (Permit) issued to the White Mesa Uranium Mill.

(Over)
DRC-2018-001142 195 North 1950 West • Salt Lake City, UT Mailing Address: P.O. Box 144880 • Salt Lake City, UT 84114-4880
Telephone [phone] • Fax [phone] • T.D.D. [phone] www.deq.utah.gov Printed on 100% recycled paper

EFR 3rd Quarter 2017 Groundwater Monitoring Report – Close-out:
Based on review of the EFR November 13, 2017 3rd Quarter 2017 Groundwater Monitoring Report, all
applicable requirements of the Permit were met and the submitted groundwater monitoring data is
reliable. The review is hereby closed out.
EFR Notice Pursuant to Part I.G.1(a) – Close-out:
Based on review of the EFR November 15, 2017 Notice, all requirements of the Permit were met. The
review is hereby closed out.
EFR November 15, 2017 Request to Remove Certain Parameters from Accelerated Monitoring
Based on review of the EFR November 15, 2017 Request, EFR requests that certain monitoring well
parameters be returned to baseline monitoring as listed on the table below:

Monitoring Well Parameter Number of Consecutive Sample
Results Below the GWCL
Baseline Monitoring
Frequency
MW-15 Selenium 9 Semi-Annually
MW-19 Nitrate 9 Semi-Annually
MW-29 Sulfate 8 Semi-Annually

It was noted that the above monitoring well parameters have had sample results below the Permitted Ground Water Compliance Limits (GWCLs) for the most recent eight or more consecutive accelerated sampling events. In accordance with Division protocols, accelerated monitoring may be discontinued if
at least eight consecutive samples show concentrations below the GWCL. Therefore, the request to
return to baseline monitoring for the parameters/wells on the table above is approved.
If you have any questions, please call Tom Rushing at [phone].
Sincerely,

Scott T. Anderson, Director
Division of Waste Management and Radiation Control

STA/TR/ka c: Kirk Benge, Health Officer, San Juan Public Health Department
Rick Meyer, Environmental Health Director, San Juan Public Health Department
Scott Hacking, P.E., DEQ District Engineer